Oil-gas separation device for well gas exploitation

Abstract

The invention provides an oil-gas separation device for well gas exploitation, and belongs to the technical field of oil-gas separation. Comprising a separation tower type structure and a feeding mechanism, and the separation tower type structure is composed of a power input assembly, a liquid storage cylinder and a gas storage top cylinder. By arranging the separation tower type structure and the feeding mechanism, large-particle solid residues in a well gas mixture are removed through a filter element in the feeding mechanism, and then gas and oil in the mixture are preliminarily separated through the design of the included angle between the feeding pipeline and the mixing barrel; the power input assembly drives the crushing fan blades to crush the separated oil liquid and filter residues, so that gas in the oil liquid and the filter residues rises and is separated, gas-liquid secondary deep separation is achieved, and the problem that separation is not thorough due to the fact that an existing separation mode is subjected to wellhead airflow pressure fluctuation and high gas-liquid mixed phase wrapping performance is effectively solved; and the oil-gas separation efficiency and the gas purity are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of oil and gas separation technology, and in particular to an oil and gas separation device for well gas development. Background Technology

[0002] During the gas extraction process, the medium extracted from the gas well is a multiphase fluid consisting of oil, gas, water, and formation solids. Oil-gas separation is the core pre-processing step for subsequent processing, storage, transportation, and utilization of gas. The separation efficiency, purity, and operational safety directly affect the resource utilization rate and production stability of gas extraction.

[0003] Existing oil and gas separation methods mostly employ gravity settling, centrifugal separation, or simple filtration. While these methods can achieve basic gas-liquid separation, in practical applications, they cannot completely separate gas and liquid due to factors such as wellhead gas pressure fluctuations and strong encapsulation of the gas-liquid mixture. This significantly affects gas separation efficiency. Furthermore, to improve gas-liquid separation efficiency, a crushing and stirring device with the necessary functions would be added to the separation tower. This requires an external motor to provide power, which not only increases the overall size and energy consumption of the equipment but also poses risks such as electrical leakage and sparks at the extraction site, leading to construction hazards. Therefore, this application provides an oil-gas separation device for well gas development to meet the requirements. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide an oil-gas separation device for well gas development. By setting up a separation tower structure and a feeding mechanism, the filter element in the feeding mechanism removes large solid particles from the well gas mixture. Then, by using the angle design between the feeding pipe and the mixing cylinder, the gas and oil in the mixture are initially separated. The power input component drives the crushing fan blades to crush the separated oil and filter residue, so that the gas in the oil and filter residue rises and separates, realizing secondary deep gas-liquid separation. This solves the problems of low separation efficiency and safety hazards of existing oil-gas separation devices.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An oil-gas separation device for well gas development includes a separation tower structure and a feeding mechanism. The separation tower structure consists of a power input component, a liquid storage cylinder, and a gas storage top cylinder. The power input component includes a mixing cylinder. A feeding pipe is fixedly installed on the side wall of the mixing cylinder, and the feeding pipe communicates with the interior of the mixing cylinder at a 30° angle. A positioning outer cylinder is fixedly installed on the inner wall of the top center of the mixing cylinder by bolts. An internal T-shaped cylinder is fixedly installed on the inner wall of the middle part of the positioning outer cylinder. Bearings are installed on the top and bottom outer walls of the internal T-shaped cylinder. A turntable is provided on the outside of the internal T-shaped cylinder, and the turntable is rotatably connected to the internal T-shaped cylinder through bearings. The top outer wall of the turntable is rotatably connected to the inner wall of the positioning outer cylinder, and the connection is chamfered. Multiple sets of oil discharge holes are evenly arranged in a fan shape on the turntable surface. Multiple sets of force-bearing impellers are evenly fixedly installed on the turntable surface.

[0006] Optionally, a top cross seat is fixedly installed on the inner wall of the top of the positioning outer cylinder. A rotating shaft is rotatably connected to the inner wall of the top cross seat via a bearing. The rotating shaft is located in the middle of the built-in T-shaped cylinder. A cover is fixedly installed on the outer wall of the rotating shaft. The top of the cover is sealed to the bottom of the turntable and is fixedly connected by bolts.

[0007] Optionally, the top of the liquid storage cylinder is fixedly connected to the bottom of the mixing cylinder, and the turntable is rotatably connected to the connection. A drain pipe is provided on the bottom side wall of the liquid storage cylinder. A bottom cylinder is fixedly installed at the bottom of the liquid storage cylinder. A bridge-shaped seat is fixedly installed on the inner wall of the bottom cylinder. A hollow sleeve shaft is rotatably connected to the top inner wall of the bridge-shaped seat, and the hollow sleeve shaft rotatably passes through the center of the top of the bottom cylinder. A bevel gear three is fixedly installed at the bottom of the hollow sleeve shaft. The rotating shaft rotatably passes through the hollow sleeve shaft and the bevel gear three, and the bottom of the rotating shaft is rotatably connected to the bottom wall of the bridge-shaped seat. A bevel gear one is fixedly installed on the bottom outer wall of the rotating shaft. A bevel gear two is rotatably connected to the side wall of the bridge-shaped seat, and the bevel gear two meshes with both the bevel gear one and the bevel gear three. Two sets of crushing fan blades are fixedly installed on the outer walls of the hollow sleeve shaft and the rotating shaft located inside the liquid storage cylinder.

[0008] Optionally, the air storage top cylinder is fixedly connected to the top of the mixing cylinder, and multiple sets of exhaust holes are evenly opened on the inner wall of the top of the mixing cylinder. A wire mesh demister is fixedly installed on the inner wall of the air storage top cylinder, and the air storage top cylinder located at the top of the wire mesh demister is sloped. An exhaust pipe is opened on the top side wall of the air storage top cylinder.

[0009] Optionally, a sliding shaft is slidably connected to the inner wall of the top of the gas storage cylinder, and a sliding plug is fixedly installed at the bottom of the sliding shaft. The sliding plug is slidably connected to the inner wall of the top of the gas storage cylinder and is always located above the exhaust pipe. A spring is fixedly installed at the top of the sliding plug, and the other end of the spring is fixedly connected to the inner wall of the gas storage cylinder.

[0010] Optionally, the feeding mechanism includes an outer screen cylinder, a side cover is fixedly installed on the end wall of the outer screen cylinder, a cylinder head is fixedly installed on the front wall of the outer screen cylinder, a filter element is installed on the inner wall of the outer screen cylinder and the filter element is snapped into the end wall of the side cover, an inlet is opened on the outer wall of the cylinder head, and a discharge port is opened on the end side wall of the outer screen cylinder and the discharge port is sealed and fixedly connected to the feeding pipe.

[0011] Compared with the prior art, the present invention has at least the following beneficial effects:

[0012] In the above scheme, by setting up a separation tower structure and a feeding mechanism, the filter element in the feeding mechanism removes large solid particles from the well gas mixture. Then, by using the angle design between the feeding pipe and the mixing cylinder, the gas and oil in the mixture are initially separated. The power input component drives the crushing fan blades to crush the separated oil and filter residue, causing the gas in the oil and filter residue to rise and separate, realizing secondary deep separation of gas and liquid. This effectively solves the problem of incomplete separation caused by wellhead gas pressure fluctuations and strong gas-liquid phase encapsulation in existing separation methods, and greatly improves the oil-gas separation efficiency and gas purity.

[0013] By setting up a power input component, the impeller is impacted by the flow and impact force of the well gas mixture, which drives the turntable to rotate. Through the transmission cooperation between the cover and the bevel gear set, the rotating shaft and the hollow sleeve shaft are rotated in opposite directions simultaneously, thereby driving the crushing fan blades to complete the crushing and gas release operation. The entire process uses the energy of the fluid itself to provide power, without the need for additional electric drive equipment, which reduces production energy consumption and avoids construction hazards such as leakage and electric sparks caused by external motors at the mining site, significantly improving the operational safety of well gas extraction sites. Attached Figure Description

[0014] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0015] Figure 1 A three-dimensional structural diagram of an oil-gas separation device used in well gas development; Figure 2 This is a schematic diagram of the feeding mechanism; Figure 3 A frontal three-dimensional structural diagram of a split tower structure; Figure 4 A bottom-view perspective view of the split tower structure; Figure 5 This is a schematic diagram of the internal structure of the gas storage top cylinder; Figure 6 This is a schematic diagram of the assembly of the power input component and the liquid storage tank; Figure 7This is a schematic diagram of the power input component. Figure 8 This is a partial sectional view of the power input component; Figure 9 This is a partial exploded view of the power input component; Figure 10 This is a schematic diagram of the assembly of the cap and the turntable; Figure 11 This is an assembly diagram of the positioning outer cylinder, the inner T-shaped cylinder, and the turntable; Figure 12 This is a schematic diagram of the assembly of the turntable and the built-in T-shaped cylinder; Figure 13 This is a schematic diagram of the assembly of the rotating shaft and the crushing fan blades on the hollow sleeve shaft; Figure 14 This is a schematic diagram of the internal structure of the bottom cylinder; Figure 15 This is a schematic diagram of the assembly of the hollow sleeve shaft and the rotating shaft.

[0016] Figure label: Separation tower structure 100, power input assembly 110, mixing cylinder 111, feed pipe 112, exhaust port 113, positioning outer cylinder 114, built-in T-shaped cylinder 115, bearing 116, turntable 117, oil drain hole 118, force-bearing impeller 119, rotating shaft 120, cover 121, top cross seat 122, bottom cylinder 123, bridge-type seat 124, bevel gear one 125, bevel gear two 126, hollow sleeve shaft 127, bevel gear three 128, crushing fan blade 129, liquid storage cylinder 130, liquid drain pipe 131, air storage top cylinder 140, sliding shaft 141, sliding plug 142, spring 143, exhaust pipe 144, wire mesh demister 150, feeding mechanism 200, outer screen cylinder 210, side cover 220, cylinder head 230, filter element 240, inlet 250, outlet 260.

[0017] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0018] The oil-gas separation device for well gas development provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0019] like Figures 1 to 15 As shown, an embodiment of the present invention provides an oil-gas separation device for well gas development, including a separation tower structure 100 and a feeding mechanism 200. The separation tower structure 100 consists of a power input component 110, a liquid storage cylinder 130, and a gas storage top cylinder 140. The power input component 110 includes a mixing cylinder 111, and a feeding pipe 112 is fixedly installed on the side wall of the mixing cylinder 111. The feeding pipe 112 communicates with the interior of the mixing cylinder 111, and the connection point is at a 30° angle. The mixed liquid (oil + gas + water + a small amount of solid residue) enters from the upper side of the mixing cylinder 111 at a tangential angle (30° to the tangent of the mixing cylinder 111), which can form a three-dimensional spiral vortex. At this time, the liquid in the mixing cylinder 111 will generate centrifugal force due to the vortex, and the gas, due to its lowest density, will move rapidly upward to the top wall of the mixing cylinder 111 and flow into the gas storage top cylinder 140 through the exhaust hole 113. The solid residue and... The liquid, due to its high density, is thrown towards the bottom of the mixing cylinder 111 and comes into contact with the force-bearing impeller 119 at the top of the turntable 117, causing the force-bearing impeller 119 to rotate. A positioning outer cylinder 114 is fixedly installed on the inner wall of the top center of the mixing cylinder 111 by bolts. An inner T-shaped cylinder 115 is fixedly installed on the inner wall of the middle part of the positioning outer cylinder 114. Bearings 116 are installed on the top and bottom outer walls of the inner T-shaped cylinder 115. A turntable 117 is provided on the outside of the inner T-shaped cylinder 115, and the turntable 117 is rotatably connected to the inner T-shaped cylinder 115 through the bearings 116. The top outer wall of the turntable 117 is rotatably connected to the inner wall of the positioning outer cylinder 114, and the connection is chamfered. The chamfer at the connection can prevent oil and gas from seeping into the turntable 117. Multiple sets of oil drain holes 118 are evenly arranged in a fan shape on the turntable 117. Multiple sets of force-bearing impellers 119 are evenly fixedly installed on the turntable 117.

[0020] In this embodiment, as Figures 8 to 12 As shown, a top cross seat 122 is fixedly installed on the inner wall of the top of the positioning outer cylinder 114. A rotating shaft 120 is rotatably connected to the inner wall of the top cross seat 122 via a bearing. The rotating shaft 120 is located in the middle of the inner T-shaped cylinder 115. A cover 121 is fixedly installed on the outer wall of the rotating shaft 120. The top of the cover 121 is sealed to the bottom of the turntable 117 and is fixedly connected by bolts. The cover 121 can seal the inner T-shaped cylinder 115 and the bottom of the turntable 117 to prevent oil and gas from entering. At the same time, when the turntable 117 rotates, the cover 121 can also drive the rotating shaft 120 to rotate.

[0021] As one implementation method in this embodiment, such as Figure 6 , Figures 13 to 15As shown, the top of the liquid storage cylinder 130 is fixedly connected to the bottom of the mixing cylinder 111, and the turntable 117 is rotatably connected to the connection. A drain pipe 131 is provided on the bottom side wall of the liquid storage cylinder 130, which can discharge the solid-liquid mixture in the liquid storage cylinder 130. A bottom cylinder 123 is fixedly installed at the bottom of the liquid storage cylinder 130, and a bridge-shaped seat 124 is fixedly installed on the inner wall of the bottom cylinder 123. A hollow sleeve shaft 127 is rotatably connected to the top inner wall of the bridge-shaped seat 124, and the hollow sleeve shaft 127 rotatably passes through the center of the top of the bottom cylinder 123. An umbrella is fixedly installed at the bottom of the hollow sleeve shaft 127. Gear 128 is a rotating shaft 120 that rotatably passes through the hollow sleeve shaft 127 and bevel gear 128. The bottom of the rotating shaft 120 is rotatably connected to the bottom wall of the bridge seat 124. Bevel gear 125 is fixedly installed on the outer wall of the bottom of the rotating shaft 120. Bevel gear 126 is rotatably connected to the side wall of the bridge seat 124. Bevel gear 126 meshes with bevel gear 125 and bevel gear 128. Two sets of crushing fan blades 129 are fixedly installed on the hollow sleeve shaft 127 inside the liquid storage cylinder 130 and on the outer wall of the rotating shaft 120. In this invention, the force-bearing impeller 119 is subjected to thrust. The rotation causes the turntable 117 to rotate. Through the connecting action of the cover 121, the turntable 117 can drive the rotating shaft 120 to rotate. This causes the rotating shaft 120 to drive the bevel gear 125 at the bottom to engage with the bevel gear 126 on the side wall of the bridge seat 124, and the bevel gear 126 to engage with the bevel gear 128. This causes the bevel gear 128 to drive the hollow sleeve shaft 127 to rotate. At this time, the bevel gear 125 and the bevel gear 128 rotate in opposite directions, that is, the hollow sleeve shaft 127 and the rotating shaft 120 rotate in opposite directions. The hollow sleeve shaft 127 and the rotating shaft 120 drive the crushing fan blades 129 to rotate, and the crushing fan blades 129 on the hollow sleeve shaft 127 and the rotating shaft 120 rotate in opposite directions. At the same time, the solid slag and liquid on the turntable 117 will fall into the liquid storage cylinder 130 through the oil drain hole 118, and will be repeatedly crushed by the crushing fan blades 129 in the liquid storage cylinder 130, which will push out the gas in the solid slag and liquid and rise into the gas storage top cylinder 140 to improve the gas collection effect. After that, the liquid and impurities in the liquid storage cylinder 130 will be discharged through the liquid drain pipe 131.

[0022] In this embodiment, as Figures 3 to 7As shown, the gas storage top cylinder 140 is fixedly connected to the top of the mixing cylinder 111. Multiple sets of exhaust holes 113 are evenly distributed on the inner wall of the top of the mixing cylinder 111. Gas rising from the mixing cylinder 111 can flow into the gas storage top cylinder 140 through the exhaust holes 113. A wire mesh demister 150 is fixedly installed on the inner wall of the gas storage top cylinder 140. The wire mesh demister 150 can separate gas and liquid, thereby achieving the effect of purifying oil and gas. The gas storage top cylinder 140, located at the top of the wire mesh demister 150, is sloped. As the purified oil and gas rises within the gas storage top cylinder 140, it continuously contacts the inner wall of the gas storage top cylinder 140, achieving a condensation and reflux effect, thus realizing multiple purification processes. An exhaust pipe 144 is provided on the top side wall of the gas storage top cylinder 140. A sliding shaft 141 is slidably connected to the wall seal. A sliding plug 142 is fixedly installed at the bottom of the sliding shaft 141. The sliding plug 142 is slidably connected to the top inner wall of the gas storage cylinder 140 and is always located above the exhaust pipe 144. A spring 143 is fixedly installed at the top of the sliding plug 142, and the other end of the spring 143 is fixedly connected to the inner wall of the gas storage cylinder 140. In this invention, the gas in the gas storage cylinder 140 is purified by the wire mesh demister 150 and then discharged from the exhaust pipe 144 at the top of the gas storage cylinder 140. When the gas pressure in the gas storage cylinder 140 is too high, the gas pressure will squeeze the sliding plug 142, causing the sliding plug 142 to squeeze the spring 143, increasing the volume in the gas storage cylinder 140, thereby buffering the gas pressure in the gas storage cylinder 140 and preventing danger.

[0023] In this embodiment, as Figure 1 and Figure 2 As shown, the feeding mechanism 200 includes an outer screen cylinder 210. A side cover 220 is fixedly installed on the end wall of the outer screen cylinder 210, and a cylinder head 230 is fixedly installed on the front wall of the outer screen cylinder 210. Both the side cover 220 and the cylinder head 230 are connected to the outer screen cylinder 210 via flanges. A filter element 240 is installed on the inner wall of the outer screen cylinder 210, and the filter element 240 is snapped into the end wall of the side cover 220. The filter element 240 can filter the solid residue in the mixture, preventing the solid residue from passing through the filter element 240. At the same time, a small amount of solid residue will pass through the filter element 240 and enter the discharge port 260. Meanwhile, because the particle size of the solid residue passing through the filter element 240 is relatively small... The cylinder head 230 is small and can pass through the oil drain hole 118. The outer wall of the cylinder head 230 has an inlet 250, which can guide the mixture extracted from the gas well. The end side wall of the outer screen cylinder 210 has a discharge port 260, and the discharge port 260 is sealed and fixedly connected to the feed pipe 112. In this invention, the mixture extracted from the gas well (including oil, oil residue, and gas) is introduced into the outer screen cylinder 210 through the inlet 250. After being screened by the filter element 240 in the outer screen cylinder 210, the oil residue is filtered out. The filtered oil mixture (containing a very small amount of tiny oil residue) can flow into the feed pipe 112 through the discharge port 260.

[0024] The working principle of the technical solution provided by this invention is as follows: The mixture (containing oil, oil residue, and gas) extracted from the gas well is introduced into the outer screen cylinder 210 through inlet 250. After being screened by the filter element 240 inside the outer screen cylinder 210, the oil residue is filtered out. The filtered oil-liquid mixture (containing a very small amount of tiny oil residue) can flow into the feed pipe 112 through outlet 260. Then, the mixture (oil + gas + water + a small amount of solid residue) enters from the upper side of the mixing cylinder 111 at a tangential angle (30° to the tangent of the mixing cylinder 111), forming a three-dimensional spiral vortex. At this time, the liquid in the mixing cylinder 111... The centrifugal force generated by the eddy current causes the gas, due to its lowest density, to rise rapidly to the top wall of the mixing cylinder 111 and flow into the gas storage top cylinder 140 through the exhaust port 113. The solid residue and liquid, due to their higher density, are thrown towards the bottom of the mixing cylinder 111 and come into contact with the force-bearing impeller 119 at the top of the turntable 117. At this point, the force-bearing impeller 119 rotates under the thrust, thereby driving the turntable 117 to rotate. Through the connecting action of the cover 121, the turntable 117 can drive the rotating shaft 120 to rotate, causing the rotating shaft 120 to drive the bevel gear 125 at the bottom and the bevel gear 12 on the side wall of the bridge seat 124. 6. The bevel gear 126 and bevel gear 128 are engaged, causing bevel gear 128 to drive the hollow sleeve shaft 127 to rotate. At this time, bevel gear 125 and bevel gear 128 rotate in opposite directions, meaning the hollow sleeve shaft 127 and the rotating shaft 120 rotate in opposite directions. This causes the hollow sleeve shaft 127 and the rotating shaft 120 to drive the crushing fan blade 129 to rotate, and the crushing fan blade 129 on the hollow sleeve shaft 127 and the rotating shaft 120 rotate in opposite directions. Simultaneously, the solid residue and liquid on the turntable 117 will fall through the oil drain hole 118 into the liquid storage cylinder 130, where they are absorbed by the liquid storage cylinder 130. The crushing fan blades 129 inside the cylinder repeatedly crush the solid slag and gas in the liquid, and then discharge them into the gas storage top cylinder 140 to improve the gas collection effect. After that, the liquid and impurities in the liquid storage cylinder 130 will be discharged through the drain pipe 131. At the same time, the gas in the gas storage top cylinder 140 is purified by the wire mesh demister 150 and discharged from the exhaust pipe 144 at the top of the gas storage top cylinder 140. When the gas pressure in the gas storage top cylinder 140 is too high, the gas pressure will squeeze the sliding plug 142, causing the sliding plug 142 to squeeze the spring 143, thereby buffering the gas pressure in the gas storage top cylinder 140 and preventing danger.

[0025] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0026] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A well gas extraction oil-gas separation device, comprising a separation tower structure (100) and a feeding mechanism (200), characterized in that, The separation tower structure (100) consists of a power input assembly (110), a liquid storage cylinder (130), and a gas storage top cylinder (140). The power input assembly (110) includes a mixing cylinder (111). A feed pipe (112) is fixedly installed on the side wall of the mixing cylinder (111). The feed pipe (112) communicates with the interior of the mixing cylinder (111), and the connection point forms a 30° angle. A positioning outer cylinder (114) is fixedly installed on the inner wall of the top center of the mixing cylinder (111) by bolts. An internal T-shaped cylinder is fixedly installed on the inner wall of the middle part of the positioning outer cylinder (114). 115), the top and bottom outer walls of the built-in T-shaped cylinder (115) are equipped with bearings (116), the outer side of the built-in T-shaped cylinder (115) is provided with a turntable (117), and the turntable (117) is rotatably connected to the built-in T-shaped cylinder (115) through the bearings (116). The top outer wall of the turntable (117) is rotatably connected to the inner wall of the positioning outer cylinder (114), and the connection is chamfered. The turntable (117) is provided with multiple sets of oil drain holes (118) arranged evenly in a fan shape. Multiple sets of force-bearing impellers (119) are evenly fixedly installed on the turntable (117).

2. The well gas extraction oil-gas separation device according to claim 1, characterized in that, A top cross seat (122) is fixedly installed on the inner wall of the top of the positioning outer cylinder (114). A rotating shaft (120) is rotatably connected to the inner wall of the top cross seat (122) via a bearing. The rotating shaft (120) is located in the middle of the built-in T-shaped cylinder (115). A cover (121) is fixedly installed on the outer wall of the rotating shaft (120). The top of the cover (121) is sealed to the bottom of the turntable (117) and is fixedly connected by bolts.

3. The well gas extraction oil-gas separation device according to claim 2, characterized in that, The top of the liquid storage cylinder (130) is fixedly connected to the bottom of the mixing cylinder (111), and the turntable (117) is rotatably connected to the connection. A drain pipe (131) is provided on the bottom side wall of the liquid storage cylinder (130). A bottom cylinder (123) is fixedly installed at the bottom of the liquid storage cylinder (130). A bridge-shaped seat (124) is fixedly installed on the inner wall of the bottom cylinder (123). A hollow sleeve shaft (127) is rotatably connected to the top inner wall of the bridge-shaped seat (124), and the hollow sleeve shaft (127) rotatably passes through the center of the top of the bottom cylinder (123). A bevel gear (128) is fixedly installed at the bottom of the hollow sleeve shaft (127). The rotating shaft (120) rotates through the hollow sleeve shaft (127) and the bevel gear three (128), and the bottom of the rotating shaft (120) is rotatably connected to the bottom wall of the bridge seat (124). The outer wall of the bottom of the rotating shaft (120) is fixedly installed with bevel gear one (125), and the side wall of the bridge seat (124) is rotatably connected with bevel gear two (126). Bevel gear two (126) meshes with bevel gear one (125) and bevel gear three (128). The hollow sleeve shaft (127) and the outer wall of the rotating shaft (120) located inside the liquid storage cylinder (130) are both fixedly installed with two sets of crushing fan blades (129).

4. The well gas extraction oil-gas separation device according to claim 1, characterized in that, The gas storage top cylinder (140) is fixedly connected to the top of the mixing cylinder (111). Multiple sets of exhaust holes (113) are evenly opened on the inner wall of the top of the mixing cylinder (111). A wire mesh demister (150) is fixedly installed on the inner wall of the gas storage top cylinder (140). The gas storage top cylinder (140) located on the top of the wire mesh demister (150) is sloped. An exhaust pipe (144) is opened on the top side wall of the gas storage top cylinder (140).

5. The well gas extraction oil-gas separation device according to claim 4, characterized in that, The top inner wall of the gas storage cylinder (140) is sealed and slidably connected to a sliding shaft (141). A sliding plug (142) is fixedly installed at the bottom of the sliding shaft (141). The sliding plug (142) is sealed and slidably connected to the top inner wall of the gas storage cylinder (140) and is always located above the exhaust pipe (144). A spring (143) is fixedly installed at the top of the sliding plug (142), and the other end of the spring (143) is fixedly connected to the inner wall of the gas storage cylinder (140).

6. The well gas extraction oil-gas separation device according to claim 1, characterized in that, The feeding mechanism (200) includes an outer screen cylinder (210), a side cover (220) is fixedly installed on the end wall of the outer screen cylinder (210), a cylinder head (230) is fixedly installed on the front wall of the outer screen cylinder (210), a filter element (240) is installed on the inner wall of the outer screen cylinder (210), and the filter element (240) is snapped into the end wall of the side cover (220). An inlet (250) is opened on the outer wall of the cylinder head (230), and a discharge port (260) is opened on the end side wall of the outer screen cylinder (210), and the discharge port (260) is sealed and fixedly connected to the feeding pipe (112).

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